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From earlier *coēpī. The present stem coepio is a back-formation.




  1. first-person singular perfect active indicative of coepiō


coepī (perfect infinitive coepisse, perfect participle coeptum, defective)

  1. I began.

Usage notes[edit]

Defective verb, no present tense conjugations. For a full set of forms, incipiō is often used in its place.


   Conjugation of coepi (third conjugation)
indicative singular plural
first second third first second third
active perfect coepī coepistī coepit coepimus coepistis coepērunt, coepēre
pluperfect coeperam coeperās coeperat coeperāmus coeperātis coeperant
future perfect coeperō coeperis coeperit coeperimus coeperitis coeperint
passive perfect coeptus + present active indicative of sum
pluperfect coeptus + imperfect active indicative of sum
future perfect coeptus + future active indicative of sum
subjunctive singular plural
first second third first second third
active perfect coeperim coeperīs coeperit coeperīmus coeperītis coeperint
pluperfect coepissem coepissēs coepisset coepissēmus coepissētis coepissent
passive perfect coeptus + present active subjunctive of sum
pluperfect coeptus + imperfect active subjunctive of sum
non-finite forms active passive
present perfect future present perfect future
infinitives coepisse coeptūrus esse coeptus esse coeptum īrī
participles coeptūrus coeptus coepiendus
verbal nouns gerund supine
nominative genitive dative/ablative accusative accusative ablative
coeptum coeptū

Related terms[edit]


  • coepi in Gaffiot, Félix (1934) Dictionnaire Illustré Latin-Français, Hachette
  • Carl Meissner; Henry William Auden (1894) Latin Phrase-Book[1], London: Macmillan and Co.
    • he fell ill: aegrotare coepit
    • a man's credit begins to go down: fides aliquem deficere coepit
  • De Vaan, Michiel (2008), “apīscor”, in Etymological Dictionary of Latin and the other Italic Languages (Leiden Indo-European Etymological Dictionary Series; 7), Leiden, Boston: Brill, page 47